[BitBucket user: Toshko Andreev]
[BitBucket date: 2016-02-22.07:09:50]

I've been running Orthanc with the PostgreSQL plugins for some time now and it appears that after about 10 hours of inactivity an exception occurs with Postgre:

```
#!Log
E0220 03:20:51.562601 PluginsManager.cpp:163] Exception in database back-end: Error in PostgreSQL: server closed the connection unexpectedly
	This probably means the server terminated abnormally
	before or while processing the request.


E0220 06:51:03.924868 PluginsManager.cpp:163] Exception in database back-end: Error in PostgreSQL: no connection to the server
```

Orthanc at that point becomes broken and cannot work until you restart the service (Windows 7 x64).